<template>
  <div class="app">
    <h1>我是APP组件(祖)</h1>
    <Child></Child>
  </div>
</template>

<script>
import Child from './components/Child.vue'
  export default {
    name:'App',
   components:{Child},
  }
</script>

<style>
  .app{
    background-color: aqua;
    padding: 10px;
  }
</style>